Changes between Version 9 and Version 10 of Tutorial/AdvancedParticleImagingVelocimetry


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Timestamp:
Jan 15, 2015, 4:25:20 PM (6 years ago)
Author:
vaillant1p
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  • Tutorial/AdvancedParticleImagingVelocimetry

    v9 v10  
    55
    66== Visual check ==
    7 Launch the GUI uvmat and open an image in  /UVMAT_DEMO_FILES/CONVECTION/Dalsa1, for instance 'Dalsa1_100_1.png'. It represents a convection experiment in a box with rectangular vertical cross section, with a heated right hand vertical wall. A plume with small lateral extension is produced near this wall which is a source of difficulty for PIV.  As ususal the first step is a visual observation of the particle motion. Zoom the image on the right hand side and press the button '''movie_pair''', to see the displacement from image index _100_1 to _100_2. We can compare the influence of time interval by selecting the j index pairs 1-2 (100 ms), 2-3 (200 ms) or 1-3 (300 ms). We can notice that the pair 1-3 is needed to clearly see the motion in the interior while it is too large for the displacement in the plume.  The smaller interval 1-2 is then appropriate.
     7Launch the GUI '''uvmat''' and open an image in  /UVMAT_DEMO_FILES/CONVECTION/Dalsa1, for instance 'Dalsa1_100_1.png'. It represents a convection experiment in a box with rectangular vertical cross section, with a heated right hand vertical wall. A plume with small lateral extension is produced near this wall which is a source of difficulty for PIV.  As ususal the first step is a visual observation of the particle motion. Zoom the image on the right hand side and press the button '''movie_pair''', to see the displacement from image index _100_1 to _100_2. We can compare the influence of time interval by selecting the j index pairs 1-2 (100 ms), 2-3 (200 ms) or 1-3 (300 ms). We can notice that the pair 1-3 is needed to clearly see the motion in the interior while it is too large for the displacement in the plume.  The smaller interval 1-2 is then appropriate.
    88
    99== Geometric calibration ==